{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["Disease", "Chemical"], "input": "METHODS : One hundred sixty - eight adult outpatients with mild to moderate hypertension were randomly allocated in double - blind fashion and equal number to receive 80 mg valsartan or 5 mg amlodipine for 12 weeks ."}
{"Disease": ["hypertension"], "Chemical": ["valsartan", "amlodipine"]}